1)PHP/PDO drivers 8.4.4.0002 have used the static library of CCI, so the user could install PHP/PDO drivers without installing CUBRID server first. However, this feature doesn’t affect with PHP 5.2.x or lower PHP versions, since CCI is built on VC9 and PHP 5.2.x is built on VC6. (We need to notify this on driver’s manual)

2)There are also a number of CCI unsolved/by design issues (e.g. APIS-479) which influenced for the PHP/PDO driver and also other drivers usually

3)There are still some known issues such as APIS-586, APIS-587 (caused by CUBRID bit data type issue) haven't been solved in this version

4) The unit test cases of PHP/PDO drivers have been optimized, which allows user to easily and clearly understand how to execute the unit test cases for our drivers, we may provide those optimized unittest cases to user (as a bundle of the source) instead of the old one.